Van Dyck Brown is quite unstable in acid or alkaline binders and is said to turn grey when exposed to light. The pigment needs to be thoroughly mixed and ground with oil or aqueous binders. Oil color with Van Dyck Brown dries very slowly. Still, the fine pigment continues to amaze with its extremely dark brown hue and extraordinary transparency. It used to be a very popular pigment for varnishes for wood imitations but has also been used for coloured paper, wallpaper color, distemper or beer glaze.
Please read the Safety Data Sheet before usage!